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| author |   Ben Hutchings <ben@decadent.org.uk> | 2013-10-27 21:53:40 +0000 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-29 16:51:57 -0700 |
| commit | e6418fcc8adaa5c3911295cbe7ddd368b9788616 (patch) | |
| tree | d50409fad508cefafd39d62fc0b4beb519810bc5 /drivers/uio | |
| parent | uio: fix memory leak (diff) | |
| download | linux-dev-e6418fcc8adaa5c3911295cbe7ddd368b9788616.tar.xz linux-dev-e6418fcc8adaa5c3911295cbe7ddd368b9788616.zip | |
uio: Pass pointers to virt_to_page(), not integers
Most architectures define virt_to_page() as a macro that casts its
argument such that an argument of type unsigned long will be accepted
without complaint. However, the proper type is void *, and passing
unsigned long results in a warning on MIPS.
Compile-tested only.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index c8e45add506e..e221f13fcb61 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -605,6 +605,7 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) struct uio_device *idev = vma->vm_private_data; struct page *page; unsigned long offset; + void *addr; int mi = uio_find_mem_index(vma); if (mi < 0) @@ -616,10 +617,11 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) */ offset = (vmf->pgoff - mi) << PAGE_SHIFT; + addr = (void *)(unsigned long)idev->info->mem[mi].addr + offset; if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL) - page = virt_to_page(idev->info->mem[mi].addr + offset); + page = virt_to_page(addr); else - page = vmalloc_to_page((void *)(unsigned long)idev->info->mem[mi].addr + offset); + page = vmalloc_to_page(addr); get_page(page); vmf->page = page; return 0; |